An efficient string welding device and method for string welding two specifications of bonding wire dies into one

Abstract

The present invention discloses an efficient string welding device and method for string welding two specifications of bonding wire molds together. The present invention relates to the technical field of string welding two specifications of bonding wire molds together. The device comprises a workbench, on which are provided two positioning and welding assemblies for positioning and welding bonding wire mold A. The workbench is fixed with lifting cylinders located on the left and right sides of the positioning and welding assemblies, respectively. The active ends of the piston rods of the two lifting cylinders are fixedly connected to rods. A lifting plate is fixed between the two rods. Two positioning and clamping assemblies for positioning and clamping bonding wire mold B are provided on the bottom surface of the lifting plate. The two positioning and clamping assemblies are respectively located directly above the two positioning and welding assemblies. The beneficial effects of the present invention are: greatly shortening the positioning time of the two specifications of bonding wire molds and greatly improving the efficiency of string welding of the two specifications of bonding wire molds.

Description

Technical Field

[0001] The present invention relates to the technical field of serially welding bonding wire dies of two specifications into one body, and in particular to a high-efficiency serial welding device and method for serially welding bonding wire dies of two specifications into one body. Background Art

[0002] The bonding wire mold is used to straighten the large diameter bonding wire into a small diameter bonding wire. The straightened small diameter bonding wire can be used for semiconductor packaging. The structure of the bonding wire mold is as follows: Figure 1~Figure 2 As shown, the bonding wire die comprises a disc 1 and a cylinder 2, which are fixedly connected together. The cylinder 2 is coaxial with the disc 1. A central hole 3 is defined in the middle of the bonding wire die, axially extending through the disc 1 and the cylinder 2. This bonding wire die, when used in conjunction with a wire drawing machine, can straighten a large-diameter bonding wire into a smaller-diameter bonding wire of the same diameter as the central hole 3.

[0003] A certain workshop produces two specifications of bonding wire molds, one of which is the bonding wire mold A4 and the other is the bonding wire mold B5. The outer diameter of the cylinder 2 of the bonding wire mold B5 is larger than that of the cylinder 2 of the bonding wire mold A4, and the diameter of the center hole 3 of the bonding wire mold B5 is larger than that of the center hole 3 of the bonding wire mold A4. In order to continuously pull large-diameter bonding wires, workers need to weld the two specifications of bonding wire molds together to obtain the following: Figure 3 The finished mold shown has two interconnected and coaxial center holes 3. Workers use these two center holes 3 to pull large-diameter bonding wires, allowing for continuous straight-drawing of large-diameter bonding wires, thereby rapidly producing the desired small-diameter bonding wires.

[0004] The method used by workers in the workshop to string together two specifications of bonding wire dies is:

[0005] S1. The worker takes out a bonding wire mold A4 and places the disk 1 of the bonding wire mold A4 on the top surface of the machine table 6. Figure 4 As shown;

[0006] S2. The worker takes out a bonding wire mold B5 and places the cylinder 2 of the bonding wire mold B5 on the top surface of the cylinder 2 of the bonding wire mold A4. Then the worker adjusts the position of the bonding wire mold B5 so that the cylinder 2 of the bonding wire mold B5 is coaxial with the cylinder 2 of the bonding wire mold A4, thereby ensuring that the center hole 3 of the bonding wire mold B5 is coaxial with the center hole 3 of the bonding wire mold A4, thereby achieving the positioning of the bonding wire mold B5 on the top surface of the bonding wire mold A4. Figure 5 As shown;

[0007] S3, the worker rotates downward the pressing plates 7 of the fixtures on both sides of the machine 6 so that the two pressing plates 7 press on the top surface of the disk 1 of the bonding wire mold B5, thereby fixing the bonding wire mold A4 and the bonding wire mold B5 between the machine 6 and the pressing plates 7. Figure 6 As shown, its purpose is to prevent the bonding wire die B5 from being displaced relative to the bonding wire die A4 during the subsequent welding process;

[0008] S4. The worker adjusts the position of the welding head 8 of the laser welding machine so that the welding head 8 faces the contact portion between the cylinder 2 of the bonding wire die A4 and the cylinder 2 of the bonding wire die B5, thereby completing the positioning of the welding head 8. Figure 7 As shown, the worker turns on the laser welding machine, and the laser beam emitted by the welding head 8 is irradiated on the contact part; then the welding head 8 is moved circumferentially on the horizontal plane. When the welding head 8 rotates one circle, a circular weld scar is welded at the contact part, thereby finally realizing the serial welding of two specifications of bonding wire molds into one, and then producing a required finished mold;

[0009] S5. Removal of the finished mold: The worker first turns off the laser welding machine and then removes the welding head 8; then the worker rotates the clamping plate 7 upward to separate the clamping plate 7 from the finished mold; after separation, the worker removes the finished mold;

[0010] S6. The worker repeats the operations of steps S1 to S5 to continuously weld two types of bonding wire molds together, thereby obtaining a plurality of desired finished molds.

[0011] However, although the method used in the workshop can weld two specifications of bonding wire dies into one, in actual operation, it still reflects the following technical defects:

[0012] I. In step S2, after the worker places the bonding wire mold B5 on the top surface of the bonding wire mold A4, the worker needs to frequently adjust the position of the bonding wire mold B5 (because the outer diameter of the cylinder 2 of the bonding wire mold B5 is not equal to the outer diameter of the cylinder 2 of the bonding wire mold A4, and the two cylinders 2 cannot be aligned quickly) to ensure that the cylinder 2 of the bonding wire mold B5 is coaxial with the cylinder 2 of the bonding wire mold A4, and then ensure that the center hole 3 of the bonding wire mold B5 is coaxial with the center hole 3 of the bonding wire mold A4, which results in a long time to position the bonding wire mold B5 on the bonding wire mold A4, thereby reducing the efficiency of string soldering of the two specifications of bonding wire molds.

[0013] II. In steps S1 to S3, only one finished mold can be produced through one tooling, while the daily task is to produce 130 to 140 such finished molds. Workers weld them one by one, resulting in a long time to produce the required number of finished molds, which undoubtedly further reduces the efficiency of string welding of two specifications of bonding wire molds.

[0014] Therefore, there is an urgent need for a string welding device and method that can greatly shorten the positioning time of two specifications of bonding wire molds and greatly improve the string welding efficiency of two specifications of bonding wire molds. Summary of the Invention

[0015] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an efficient string welding device and method for string welding two specifications of bonding wire molds into one, which greatly shortens the positioning time of two specifications of bonding wire molds and greatly improves the string welding efficiency of two specifications of bonding wire molds.

[0016] The objectives of the present invention are achieved through the following technical solutions: an efficient string welding device for string welding two specifications of bonding wire molds into one, comprising a workbench, on which are provided two positioning and welding assemblies for positioning and welding a bonding wire mold A, a lifting cylinder fixedly provided on the workbench, one located on the left and right sides of the positioning and welding assemblies, the active ends of the piston rods of the two lifting cylinders being fixedly connected to rods, a lifting plate fixedly provided between the two rods, and two positioning and pressing assemblies for positioning and pressing a bonding wire mold B being provided on the bottom surface of the lifting plate, the two positioning and pressing assemblies being respectively located directly above the two positioning and welding assemblies;

[0017] The positioning and pressing assembly on the left side includes a connecting rod fixedly connected to the bottom surface of the lifting plate, a platform fixedly arranged at the bottom of the connecting rod, and a through slot opened in the platform. An arch frame fixedly arranged on the top surface of the platform is provided just above the through slot. A pressing oil cylinder is fixedly arranged on the top surface of the arch frame. The piston rod of the pressing oil cylinder passes through the arch frame downward, and a pressure head is fixed on the extended end.

[0018] Support mechanisms are respectively provided on the left and right sides of the arch frame. The support mechanism on the left side includes a vertical oil cylinder fixed on the top surface of the platform and two connecting rods hinged on the bottom surface of the lifting plate. The two connecting rods are arranged in parallel, and a horizontally arranged guard plate is hinged between the two connecting rods. A semicircular hole is provided at the inner end of the guard plate, and the semicircular hole matches the outer contour of the cylinder of the bonding wire mold B; the piston rod of the vertical oil cylinder passes downward through the platform, and a movable rod is hinged on the extended end via a first pin shaft, and the other end of the movable rod is hinged to the outer connecting rod via a second pin shaft.

[0019] The workbench is fixed with two supports respectively located on the left and right sides of the positioning and welding assembly, and the cylinder barrels of the two jacking cylinders are respectively fixed on the two supports.

[0020] The pressure head is made of nylon and is located just above the through slot.

[0021] The two supporting mechanisms are symmetrical about the arch frame.

[0022] The positioning and welding assembly on the left side includes a fixed shaft fixed on the workbench, a positioning seat fixed on the top of the fixed shaft, and a driven gear rotatably mounted on the outside of the fixed shaft via a ball bearing. A positioning hole is provided on the top surface of the positioning seat, and the positioning hole matches the outer contour of the disc of the bonding wire mold A; a bracket is fixed on the top surface of the driven gear, the upper end of the bracket extends above the positioning seat, and a welding head inclined upward is fixed on the extended end, and the power cord of the welding head is connected to the laser welding machine.

[0023] A driving assembly for driving the driven gear to rotate is provided between the two positioning and welding assemblies. The driving assembly includes a driving motor fixed on the workbench. A driving gear is installed on the output shaft of the driving motor. The driving gear is engaged with the driven gears of the two positioning and welding assemblies.

[0024] The high-efficiency series welding device also includes a controller, which is electrically connected to the lifting cylinder, the pressing cylinder, the vertical cylinder, the laser welding machine and the driving motor via signal lines.

[0025] An efficient string soldering method for bonding wire dies of different specifications comprises the following steps:

[0026] S1. A worker takes out two bonding wire dies A and inserts the discs of the two bonding wire dies A into the positioning holes of the positioning seats of the two positioning and welding components. Since the positioning holes match the outer contours of the discs of the bonding wire dies A, the two bonding wire dies A are positioned. At this point, the two bonding wire dies A are directly below the two positioning and clamping components.

[0027] S2. The worker positions the two bonding wire dies B on the top surfaces of the two bonding wire dies A respectively. The specific operation steps are as follows:

[0028] S21. The worker controls the piston rods of the two lifting cylinders to retract downward. The piston rods drive the rods downward, which in turn drive the lifting plate to move downward synchronously. The lifting plate drives the two positioning and clamping assemblies to move downward synchronously, and the positioning and clamping assemblies drive the two guard plates thereon to move downward synchronously. When the piston rods of the lifting cylinders are fully retracted, the two guard plates stop moving and are both above the bonding wire mold A.

[0029] S22. The piston rods of the two vertical oil cylinders controlling the positioning and pressing assembly extend downward, driving the movable rod to move downward. The movable rod drives the connecting rod to rotate inward, and the connecting rod drives the guard plate to move inward, so that the two guard plates move in opposite directions. When the piston rods of the two vertical oil cylinders are fully extended, the semicircular holes of the two guard plates close. After closing, the two semicircular holes form a circular hole, which is located directly above the bonding wire mold A and is coaxial with the cylindrical body of the bonding wire mold A.

[0030] S23. The worker takes out two bonding wire dies B and then places the two bonding wire dies B into the two circular holes from top to bottom. After placement, the cylindrical bodies of the two bonding wire dies B are respectively supported on the top surfaces of the cylindrical bodies of the two bonding wire dies A, thereby finally positioning the two bonding wire dies B on the top surfaces of the two bonding wire dies A. At this time, the cylindrical bodies of the bonding wire dies B are exactly coaxial with the cylindrical bodies of the bonding wire dies A, and the contact portion of the bonding wire dies B and the bonding wire dies A is exactly facing the welding head.

[0031] S3. Fixing bonding wire die B to bonding wire die A: The worker controls the piston rods of the two positioning and clamping components' clamping cylinders to extend downward. The piston rods drive the ram downward, and the ram moves toward bonding wire die B. When the piston rods of the clamping cylinders are fully extended, the ram presses against the top of bonding wire die B, thereby fixing bonding wire die B to bonding wire die A.

[0032] S4. Control the laser welding machine to start, and the laser beam emitted by the welding head irradiates the contact part of the bonding wire mold B and the bonding wire mold A; then control the driving motor of the driving assembly to start, and the driving motor drives the driving gear to rotate, and the driving gear drives the driven gear to rotate, and the driven gear drives the bracket and the welding head to rotate around the axis of the fixed shaft. When the welding head rotates one circle, a ring-shaped weld scar can be welded at the contact part, thereby finally realizing the serial welding of the bonding wire mold B and the bonding wire mold A into one, and then producing two required finished molds;

[0033] S5. Take away the two finished molds. The specific steps are as follows:

[0034] S51, controlling the laser welding machine to shut down, and at the same time controlling the driving motor to shut down, and the driving gear to stop rotating;

[0035] S52, controlling the piston rod of the clamping oil cylinder of the positioning and clamping assembly to retract upward, and the piston rod drives the pressing head to move upward, and the pressing head is separated from the finished product mold;

[0036] S53. The piston rods of the two vertical oil cylinders controlling the positioning and pressing components move upward, the piston rods drive the movable rod to move upward, the piston rods drive the connecting rods to rotate outward, the connecting rods drive the guard plates to move outward horizontally, the two guard plates move in opposite directions, and the guard plates are separated from the finished mold;

[0037] S54. The worker controls the piston rods of the two lifting cylinders to extend upward. The piston rods drive the rods upward, which in turn drive the lifting plate to move upward synchronously. The lifting plate then drives the two positioning and clamping components upward synchronously. When the piston rods of the lifting cylinders are fully extended, the worker removes the finished mold from the positioning seat.

[0038] S6. The worker repeats steps S1 to S5 multiple times to continuously weld two types of bonding wire molds together, thereby producing multiple required finished molds.

[0039] The present invention has the following advantages: greatly shortening the positioning time of two-specification bonding wire dies and greatly improving the efficiency of string welding of two-specification bonding wire dies. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 Schematic diagram of the structure of the bonding wire mold;

[0041] Figure 2 for Figure 1 The main cross-sectional diagram of

[0042] Figure 3 Schematic diagram of the structure of the finished mold;

[0043] Figure 4 Schematic diagram of placing the disk of bonding wire die A on the top surface of the machine table;

[0044] Figure 5 Schematic diagram of positioning the bonding wire die B on the top surface of the bonding wire die A;

[0045] Figure 6 Schematic diagram of fixing bonding wire die A and bonding wire die B between the machine table and the pressing plate;

[0046] Figure 7 A schematic diagram for completing the positioning of the butt welding joint;

[0047] Figure 8 It is a structural schematic diagram of the present invention;

[0048] Figure 9 for Figure 8 The main cross-sectional diagram of

[0049] Figure 10 It is a schematic diagram of the connection between the driving component and the two positioning and welding components;

[0050] Figure 11 for Figure 10 A schematic diagram of the structure of a positioning and welding component;

[0051] Figure 12 This is a schematic diagram of the connection between the jacking cylinder, the lifting plate and the two positioning and clamping components;

[0052] Figure 13 for Figure 12 A schematic structural diagram of a positioning and pressing component;

[0053] Figure 14 for Figure 13 Axonometric drawing of the guard plate in;

[0054] Figure 15 for Figure 14 The main cross-sectional diagram of

[0055] Figure 16 A schematic diagram for positioning two bonding wire dies A;

[0056] Figure 17 Schematic diagram showing that both guard plates are located above the bonding wire die A;

[0057] Figure 18 Schematic diagram of the closure of the semicircular holes of the two guard plates;

[0058] Figure 19 Schematic diagram for positioning two bonding wire dies B on the top surfaces of two bonding wire dies A respectively;

[0059] Figure 20 Schematic diagram for fixing bonding wire die B on bonding wire die A;

[0060] Figure 21 A schematic diagram of removing the finished mold;

[0061] In the picture:

[0062] 1-disc, 2-cylinder, 3-center hole, 4-bonding wire mold A, 5-bonding wire mold B, 6-machine table, 7-pressing plate, 8-welding head;

[0063] 9- working table, 10- positioning and welding assembly, 11- lifting cylinder, 12- rod, 13- lifting plate, 14- positioning and pressing assembly, 15- connecting rod, 16- platform, 17- arch frame, 18- pressing cylinder, 19- pressing head;

[0064] 20-support mechanism, 21-vertical cylinder, 22-connecting rod, 23-guard plate, 24-semicircular hole, 25-movable rod, 26-support;

[0065] 27-fixed shaft, 28-positioning seat, 29-driven gear, 30-positioning hole, 31-bracket, 32-driving assembly, 33-driving motor, 34-driving gear. DETAILED DESCRIPTION

[0066] The present invention will be further described below with reference to the accompanying drawings, and the protection scope of the present invention is not limited to the following:

[0067] like Figures 8 to 15 As shown, a high-efficiency string welding device for string welding two specifications of bonding wire molds into one, which includes a workbench 9, on which are provided two positioning and welding components 10 for positioning and welding the bonding wire mold A4, and a lifting cylinder 11 fixed on the workbench 9, which is respectively located on the left and right sides of the positioning and welding components 10, and the active ends of the piston rods of the two lifting cylinders 11 are fixedly connected with rods 12, and a lifting plate 13 is fixed between the two rods 12, and two positioning and clamping components 14 for positioning and clamping the bonding wire mold B5 are provided on the bottom surface of the lifting plate 13, and the two positioning and clamping components 14 are respectively located directly above the two positioning and welding components 10; the workbench 9 is fixed with two supports 26 respectively located on the left and right sides of the positioning and welding components 10, and the cylinder barrels of the two lifting cylinders 11 are respectively fixed on the two supports 26.

[0068] The positioning and clamping assembly 14 on the left side includes a connecting rod 15 fixedly connected to the bottom surface of the lifting plate 13, a platform 16 fixedly arranged at the bottom of the connecting rod 15, and a through slot opened in the platform 16. An arch frame 17 fixedly arranged on the top surface of the platform 16 is provided directly above the through slot. A clamping cylinder 18 is fixedly provided on the top surface of the arch frame 17. The piston rod of the clamping cylinder 18 passes downward through the arch frame 17, and a pressure head 19 is fixedly provided on the extending end. The pressure head 19 is made of nylon and is located directly above the through slot.

[0069] Support mechanisms 20 are respectively provided on the left and right sides of the arch frame 17. The two support mechanisms 20 are symmetrical about the left and right sides of the arch frame 17. The support mechanism 20 located on the left side includes a vertical cylinder 21 fixed on the top surface of the platform 16 and two connecting rods 22 hinged on the bottom surface of the lifting plate 13. The two connecting rods 22 are arranged in parallel, and a horizontally arranged guard plate 23 is hinged between the two connecting rods 22. A semicircular hole 24 is provided at the inner end of the guard plate 23, and the semicircular hole 24 matches the outer contour of the cylinder 2 of the bonding wire mold B5; the piston rod of the vertical cylinder 21 passes downward through the platform 16, and a movable rod 25 is hinged on the extending end via a first pin shaft, and the other end of the movable rod 25 is hinged to the outer connecting rod 22 via a second pin shaft.

[0070] The positioning and welding assembly 10 on the left side includes a fixed shaft 27 fixed on the workbench 9, a positioning seat 28 fixed on the top of the fixed shaft 27, and a driven gear 29 rotatably mounted on the outside of the fixed shaft 27 via a ball bearing. A positioning hole 30 is provided on the top surface of the positioning seat 28, and the positioning hole 30 matches the outer contour of the disk 1 of the bonding wire mold A4; a bracket 31 is fixed on the top surface of the driven gear 29, the upper end of the bracket 31 extends above the positioning seat 28, and a welding head 8 is fixed on the extended end, which is tilted upward. The power cord of the welding head 8 is connected to the laser welding machine. A drive assembly 32 for driving the driven gear 29 to rotate is provided between the two positioning and welding assemblies 10. The drive assembly 32 includes a drive motor 33 fixed on the workbench 9, and a driving gear 34 is installed on the output shaft of the drive motor 33. The driving gear 34 meshes with the driven gears 29 of the two positioning and welding assemblies 10.

[0071] The efficient string welding device also includes a controller, which is electrically connected to the lifting cylinder 11, the clamping cylinder 18, the vertical cylinder 21, the laser welding machine and the drive motor 33 via a signal line. Workers can use the controller to control the extension or retraction of the piston rods of the lifting cylinder 11, the clamping cylinder 18 and the vertical cylinder 21, and can also control the start or shut down of the laser welding machine, thereby facilitating the workers' operation.

[0072] An efficient string welding method for string welding two-specification bonding wire dies into one body comprises the following steps:

[0073] S1. The worker takes out two bonding wire molds A4 and respectively inserts the disks 1 of the two bonding wire molds A4 into the positioning holes 30 of the positioning seats 28 of the two positioning and welding components 10. Since the positioning holes 30 match the outer contours of the disks 1 of the bonding wire molds A4, the positioning of the two bonding wire molds A4 is achieved. Figure 16 As shown, at this time, the two bonding wire dies A4 are respectively located directly below the two positioning and pressing assemblies 14;

[0074] S2. The worker positions the two bonding wire dies B5 on the top surfaces of the two bonding wire dies A4 respectively. The specific operation steps are as follows:

[0075] S21. The worker controls the piston rods of the two lifting cylinders 11 to retract downward, and the piston rods drive the rod 12 to move downward, and the rod 12 drives the lifting plate 13 to move downward synchronously, and the lifting plate 13 drives the two positioning and pressing components 14 to move downward synchronously, and the positioning and pressing components 14 drive the two guard plates 23 thereon to move downward synchronously; when the piston rods of the lifting cylinders 11 are fully retracted, the two guard plates 23 stop moving, and both guard plates 23 are above the bonding wire mold A4, as shown in FIG. Figure 17 As shown;

[0076] S22, the piston rods of the two vertical oil cylinders 21 of the control positioning and pressing assembly 14 extend downward, the piston rods drive the movable rod 25 to move downward, the movable rod 25 drives the connecting rod 22 to rotate inward, the connecting rod 22 drives the guard plate 23 to move inward, and the two guard plates 23 make opposite movements; when the piston rods of the two vertical oil cylinders 21 are fully extended, the semicircular holes 24 of the two guard plates 23 are closed, as shown in FIG. Figure 18 As shown, after closing, the two semicircular holes 24 form a circular hole, which is just above the bonding wire mold A4 and is coaxial with the cylinder 2 of the bonding wire mold A4;

[0077] S23. The worker takes out two bonding wire molds B5, and then puts the two bonding wire molds B5 into the two circular holes from top to bottom. After being put in, the cylinders 2 of the two bonding wire molds B5 are respectively supported on the top surfaces of the cylinders 2 of the two bonding wire molds A4, thereby finally achieving the positioning of the two bonding wire molds B5 on the top surfaces of the two bonding wire molds A4. Figure 19 As shown, at this time, the cylinder 2 of the bonding wire mold B5 is exactly coaxial with the cylinder 2 of the bonding wire mold A4, and the contact portion of the bonding wire mold B5 and the bonding wire mold A4 is exactly facing the welding head 8;

[0078] S3. Fix the bonding wire mold B5 on the bonding wire mold A4: The worker controls the piston rods of the clamping oil cylinders 18 of the two positioning and clamping components 14 to extend downward, and the piston rods drive the pressure head 19 to move downward, and the pressure head 19 moves toward the bonding wire mold B5. When the piston rods of the clamping oil cylinders 18 are fully extended, the pressure head 19 just presses on the top of the bonding wire mold B5, thereby fixing the bonding wire mold B5 on the bonding wire mold A4. Figure 20 As shown;

[0079] S4, control the laser welding machine to start, and the laser beam emitted by the welding head 8 is irradiated to the contact part of the bonding wire mold B5 and the bonding wire mold A4; then control the driving motor 33 of the driving assembly 32 to start, and the driving motor 33 drives the active gear 34 to rotate, and the active gear 34 drives the driven gear 29 to rotate, and the driven gear 29 drives the bracket 31 and the welding head 8 to rotate around the axis of the fixed shaft 27. When the welding head 8 rotates one circle, a ring-shaped weld scar can be welded at the contact part, thereby finally realizing the serial welding of the bonding wire mold B5 and the bonding wire mold A4 into one, and then producing two required finished molds. The structure of the finished mold is as shown in FIG. Figure 3 As shown;

[0080] Among them, in step S1, the worker first embeds the disk 1 of the bonding wire mold A4 into the positioning hole 30 of the positioning seat 28 of the positioning and welding assembly 10 to realize the positioning of the bonding wire mold A4; then in steps S21~S22, the lifting cylinder 11 and the vertical cylinder 21 are linked to cooperate to close the semicircular holes 24 of the two guard plates 23 of the positioning and clamping assembly 14. When closed, the circular hole surrounded by the two semicircular holes 24 is coaxial with the cylinder 2 of the bonding wire mold A4, and the diameter of the circular hole is equal to the outer diameter of the cylinder 2 of the bonding wire mold B5.

[0081] Therefore, in step S23, the worker only needs to put the bonding wire mold B5 into the circular hole to quickly position the bonding wire mold B5 on the bonding wire mold A4. After being put in, the cylinder 2 of the bonding wire mold B5 is coaxial with the cylinder 2 of the bonding wire mold A4, thereby ensuring that the center hole 3 of the bonding wire mold B5 is coaxial with the center hole 3 of the bonding wire mold A4. Compared with the workshop, Figures 4 to 7 The welding method shown does not require workers to frequently adjust the position of the bonding wire mold B5 in order to position the cylinder 2 of the bonding wire mold B5 on the bonding wire mold A4, thereby greatly shortening the positioning time of the two specifications of bonding wire molds, and thus greatly improving the string welding efficiency of the two specifications of bonding wire molds.

[0082] S5. Take away the two finished molds. The specific steps are as follows:

[0083] S51, controlling the laser welding machine to shut down, and at the same time controlling the driving motor 33 to shut down, and the driving gear 34 to stop rotating;

[0084] S52, control the piston rod of the pressing oil cylinder 18 of the positioning and pressing assembly 14 to retract upward, and the piston rod drives the pressing head 19 to move upward, and the pressing head 19 is separated from the finished mold;

[0085] S53. The piston rods of the two vertical oil cylinders 21 of the control positioning and pressing assembly 14 are moved upward, and the piston rods drive the movable rod 25 to move upward. The piston rods drive the connecting rod 22 to rotate outward, and the connecting rod 22 drives the guard plate 23 to move outward in a horizontal direction. The two guard plates 23 move in opposite directions, and the guard plates 23 are separated from the finished mold.

[0086] S53, the worker controls the piston rods of the two lifting cylinders 11 to extend upward, the piston rods drive the rod 12 to move upward, the rod 12 drives the lifting plate 13 to move upward synchronously, and the lifting plate 13 drives the two positioning and pressing components 14 to move upward synchronously; when the piston rods of the lifting cylinders 11 are fully extended, the worker removes the finished mold from the positioning seat 28 in the direction of removal. Figure 21 As indicated by the arrow;

[0087] S6. The worker repeats steps S1 to S5 multiple times to continuously weld two types of bonding wire molds together, thereby producing multiple required finished molds.

[0088] In addition, it can be seen from steps S1 to S5 that the present welding device can produce two finished molds at one time through the linkage of the lifting cylinder 11, the positioning and welding assembly 10, the driving assembly 32, and the positioning and pressing assembly 14. Figures 4 to 7 The welding method shown does not require workers to weld one by one, thereby achieving the production of the required number of finished molds in a short time, thereby greatly improving the efficiency of string welding of two specifications of bonding wire molds.

[0089] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An efficient string welding device for string welding two specifications of bonding wire molds together, wherein the bonding wire mold comprises a disk (1) and a cylinder (2) fixedly connected in sequence, the cylinder (2) being coaxial with the disk (1), a center hole (3) being provided in the middle of the bonding wire mold, the center hole (3) sequentially passing through the disk (1) and the cylinder (2) in the axial direction, and characterized in that: It includes a workbench (9), on which two positioning and welding assemblies (10) for positioning and welding a bonding wire mold A (4) are arranged, and the workbench (9) is fixed with lifting cylinders (11) respectively located on the left and right sides of the positioning and welding assemblies (10), and the action ends of the piston rods of the two lifting cylinders (11) are fixedly connected with rods (12), and a lifting plate (13) is fixed between the two rods (12), and two positioning and pressing assemblies (14) for positioning and pressing a bonding wire mold B (5) are arranged on the bottom surface of the lifting plate (13), and the two positioning and pressing assemblies (14) are respectively located directly above the two positioning and welding assemblies (10); The positioning and pressing assembly (14) on the left side includes a connecting rod (15) fixedly connected to the bottom surface of the lifting plate (13), a platform (16) fixedly arranged at the bottom of the connecting rod (15), and a through groove opened in the platform (16). An arch frame (17) fixedly arranged on the top surface of the platform (16) is provided just above the through groove. A pressing oil cylinder (18) is fixedly arranged on the top surface of the arch frame (17). The piston rod of the pressing oil cylinder (18) passes through the arch frame (17) downward, and a pressure head (19) is fixedly arranged on the extended end. Support mechanisms (20) are respectively provided on the left and right sides of the arch frame (17). The support mechanism (20) on the left side includes a vertical oil cylinder (21) fixed on the top surface of the platform (16), and two connecting rods (22) hinged on the bottom surface of the lifting plate (13). The two connecting rods (22) are arranged in parallel, and a horizontally arranged guard plate (23) is hinged between the two connecting rods (22). A semicircular hole (24) is provided at the inner end of the guard plate (23). The semicircular hole (24) matches the outer contour of the cylinder (2) of the bonding wire mold B (5); the piston rod of the vertical oil cylinder (21) passes through the platform (16) downward, and a movable rod (25) is hinged on the extended end via a first pin shaft, and the other end of the movable rod (25) is hinged to the outer connecting rod (22) via a second pin shaft; The positioning and welding assembly (10) on the left side includes a fixed shaft (27) fixed on the workbench (9), a positioning seat (28) fixed on the top of the fixed shaft (27), and a driven gear (29) rotatably mounted on the outside of the fixed shaft (27) via a ball bearing, wherein a positioning hole (30) is provided on the top surface of the positioning seat (28), and the positioning hole (30) matches the outer contour of the disk (1) of the bonding wire mold A (4); a bracket (31) is fixed on the top surface of the driven gear (29), the upper end of the bracket (31) extends above the positioning seat (28), and a welding head (8) inclined upward is fixed on the extended end, and the power line of the welding head (8) is connected to the laser welding machine; A driving assembly (32) for driving the driven gear (29) to rotate is provided between the two positioning and welding assemblies (10). The driving assembly (32) includes a driving motor (33) fixed on the workbench (9). A driving gear (34) is installed on the output shaft of the driving motor (33). The driving gear (34) is meshed with the driven gears (29) of the two positioning and welding assemblies (10).

2. The high-efficiency string welding device for string welding two-specification bonding wire dies into one according to claim 1, characterized in that: Two supports (26) are fixed on the workbench (9), which are respectively located on the left and right sides of the positioning and welding assembly (10), and the cylinder barrels of the two lifting cylinders (11) are respectively fixed on the two supports (26).

3. The high-efficiency string welding device for string welding two-specification bonding wire dies into one body according to claim 2, characterized in that: The pressure head (19) is made of nylon and is located directly above the through slot.

4. The high-efficiency string welding device for string welding two-specification bonding wire dies into one body according to claim 3, characterized in that: The two supporting mechanisms (20) are symmetrical about the arch frame (17).

5. The high-efficiency string welding device for string welding two-specification bonding wire dies into one body according to claim 4, characterized in that: The high-efficiency series welding device also includes a controller, which is electrically connected to the lifting cylinder (11), the pressing cylinder (18), the vertical cylinder (21), the laser welding machine, and the driving motor (33) via signal lines.

6. A high-efficiency string welding method for string welding two-size bonding wire dies into one, using the high-efficiency string welding device for string welding two-size bonding wire dies into one according to claim 5, characterized in that: It includes the following steps: S1. The worker takes out two bonding wire molds A (4), and respectively embeds the disks (1) of the two bonding wire molds A (4) into the positioning holes (30) of the positioning seats (28) of the two positioning and welding components (10). Since the positioning holes (30) match the outer contours of the disks (1) of the bonding wire molds A (4), the positioning of the two bonding wire molds A (4) is achieved. At this time, the two bonding wire molds A (4) are respectively located directly below the two positioning and pressing components (14); S2. The worker positions the two bonding wire molds B (5) on the top surfaces of the two bonding wire molds A (4) respectively. The specific operation steps are as follows: S21. The worker controls the piston rods of the two lifting cylinders (11) to retract downward, and the piston rods drive the rod (12) to move downward, and the rod (12) drives the lifting plate (13) to move downward synchronously, and the lifting plate (13) drives the two positioning and pressing components (14) to move downward synchronously, and the positioning and pressing components (14) drive the two guard plates (23) thereon to move downward synchronously; when the piston rods of the lifting cylinders (11) are fully retracted, the two guard plates (23) stop moving, and both guard plates (23) are above the bonding wire mold A (4); S22, the piston rods of the two vertical oil cylinders (21) of the control positioning and pressing assembly (14) extend downward, the piston rods drive the movable rod (25) to move downward, the movable rod (25) drives the connecting rod (22) to rotate inward, the connecting rod (22) drives the guard plate (23) to move inward, and the two guard plates (23) move in opposite directions; when the piston rods of the two vertical oil cylinders (21) are fully extended, the semicircular holes (24) of the two guard plates (23) are closed, and after closing, the two semicircular holes (24) form a circular hole, which is just above the bonding wire mold A (4), and the circular hole is coaxial with the cylinder (2) of the bonding wire mold A (4); S23. The worker takes out two bonding wire molds B (5), and then puts the two bonding wire molds B (5) into the two circular holes from top to bottom. After being put in, the cylinders (2) of the two bonding wire molds B (5) are respectively supported on the top surfaces of the cylinders (2) of the two bonding wire molds A (4), thereby finally achieving the positioning of the two bonding wire molds B (5) on the top surfaces of the two bonding wire molds A (4). At this time, the cylinders (2) of the bonding wire mold B (5) and the cylinders (2) of the bonding wire mold A (4) are exactly coaxial, and the contact portion of the bonding wire mold B (5) and the bonding wire mold A (4) is exactly facing the welding head (8); S3. Fix the bonding wire mold B (5) on the bonding wire mold A (4): The worker controls the piston rods of the clamping oil cylinders (18) of the two positioning and clamping components (14) to extend downward, and the piston rods drive the pressure head (19) to move downward, and the pressure head (19) moves toward the bonding wire mold B (5). When the piston rod of the clamping oil cylinder (18) is fully extended, the pressure head (19) just presses on the top of the bonding wire mold B (5), thereby achieving the fixing of the bonding wire mold B (5) on the bonding wire mold A (4); S4, control the laser welding machine to start, and the laser beam emitted by the welding head (8) is irradiated to the contact portion between the bonding wire mold B (5) and the bonding wire mold A (4); then control the driving motor (33) of the driving assembly (32) to start, and the driving motor (33) drives the active gear (34) to rotate, and the active gear (34) drives the driven gear (29) to rotate, and the driven gear (29) drives the bracket (31) and the welding head (8) to rotate around the axis of the fixed shaft (27). When the welding head (8) rotates one circle, a ring-shaped weld scar can be welded at the contact portion, thereby finally realizing the serial welding of the bonding wire mold B (5) and the bonding wire mold A (4), and then producing two required finished molds; S5. Take away the two finished molds. The specific steps are as follows: S51, controlling the laser welding machine to shut down, and at the same time controlling the driving motor (33) to shut down, and the driving gear (34) to stop rotating; S52, controlling the piston rod of the clamping oil cylinder (18) of the positioning and clamping assembly (14) to retract upward, and the piston rod drives the pressing head (19) to move upward, and the pressing head (19) is separated from the finished product mold; S53, the piston rods of the two vertical oil cylinders (21) of the control positioning and pressing assembly (14) move upward, the piston rods drive the movable rod (25) to move upward, the piston rods drive the connecting rod (22) to rotate outward, the connecting rod (22) drives the guard plate (23) to move outward, the two guard plates (23) move in opposite directions, and the guard plate (23) is separated from the finished mold; S53. The worker controls the piston rods of the two lifting cylinders (11) to extend upward, and the piston rods drive the rod (12) to move upward, and the rod (12) drives the lifting plate (13) to move upward synchronously, and the lifting plate (13) drives the two positioning and pressing components (14) to move upward synchronously; when the piston rods of the lifting cylinders (11) are fully extended, the worker removes the finished mold from the positioning seat (28); S6. The worker repeats steps S1 to S5 multiple times to continuously weld two types of bonding wire molds together, thereby producing multiple required finished molds.

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